Unfortunately, the tool doesn’t support radial or repeating gradients at this time. However, if you’re looking for help with linear gradients that allow you to support IE10 and other browsers, this is it!

Too bad the gradient generator tries to get you off of IE9 when you hit it. Gave a popup with the following message – "Looks like your browser doesn't fully support CSS gradients. You need recent version of Firefox, Chrome, or Safari to use this tool."